Question about Microwave Ovens
While making popcorn a fire started inside the wall of the unit. It melted the paint and blackened the area. Good thing I was close by and it was on for only a short time, I hate to thing what might have happened had I set it for a longer duration and left the area. There is a metal panel on the side that is removable. Looking inside there is a plug in cylinder that has a hole burned in it. What is the problem and can it be fixed? I also saw some other units were recently recalled. Any info on this unit?
If the sparking has stopped, that should be fine.
If you have a burned spot you may need to sand it and repaint it with appliance paint from Wal-Mart, etc.
You can probably replace the shelf bracket / hook if it's still available.
If you'll post your brand and model, we'll see if we can steer you toward a source for a new shelf bracket.
If it's a Kenmore, you can probably find an exploded view by entering your FULL model number here: http://www3.sears.com (the 3 is correct)
We're happy to help and we appreciate your thoughtful rating of our answer.
Posted on Dec 07, 2007
SOURCE: lightning inside microwave oven
You better be carefull my friend or you will start glowing in the dark!! LOL Just kidding. But I wont kid about how dangerous that metal cylinder can be with the holes in the top. Thats the magnatron. It has very high voltage going to it and you should never ever touch any wires going to it even if its unplugged as theres a capacitor in there that holds a charge for a time. f the oven is over several years old, Im sure the magnatron will cost more then a new oven, after you add labor and such. It just migfht be time to upgrade to a new microwave?? Good Luck
Posted on Aug 11, 2006
SOURCE: Small 10 sec fire in microwave
Whirlpool had a recall on many microwaves due to this problem. Call Whirlpool and see if yours is one of them. My microwave model was mh7140xfb and was on the recall list.
Posted on Dec 29, 2008
The magnetron inside the microwave is starting to short out to ground. This happens after use there are small minute cracks on the body of the magnetron and those small cracks are big enough for 15,000 volts and up to 30,000 volts to leak through and arc to ground. It is not a small short but a big one. Replace the magnetron before it burns holes inside your microwave. Replacing the magnetron if you can find it locally or through the internet is pretty straightforward. Unplug the microwave and take the cover off about 6 screws. On the same side as the control panel and right behind it you will find the microwave on top. It is held in place with only three to four big screws. It will have about 4 wires with terminals on them that plug into a couple of places one being the large capacitor that stores all the voltage and discharges it through the magnetron. Take the terminals off and I always recommend with some needle nose pliers with insulated handles. There is nothing to unsolder and to solder. Its like replacing the battery in your car or the electronic module. Take care and good luck.
Posted on Jan 22, 2009
1) How is the cavity damaged? Is it just peeling paint, or is it rust? If it's rust then the microwave could be dangerous.
2) The antenna cap usually has a small hole in the centre, but if there are any other holes in it the magnetron itself could be damaged, and holes caused by the magnetrin arcing.
Posted on Mar 25, 2009
Arcing is caused by the build up of grease that is converted to carbon. Clean the baked on carbon from the oven cavity. If regular cleaning doesn't remove the carbon, sand it away and touch up with a similiar color paint.
Posted on Jun 21, 2010
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